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Multi-stream rotational sprinkler heads can be used for irrigation systems in place of traditional fixed-spray nozzles.

The Federal Energy Management Program (FEMP) identified multi-stream rotational sprinkler heads as a water-saving technology that is relevant to the federal sector, is commercially available, and offers significant water-savings potential.

FEMP used the following considerations when selecting this technology.

Underutilized in the federal sector

Broad applicability across the federal sector

Water and cost savings potential

Market availability

Produced by multiple manufacturers

Ease of installation/suitable as a retrofit

Technology Description

Multi-stream rotational sprinkler heads can be used for irrigation systems in place of traditional fixed-spray nozzles (sprinkler heads). They have a lower precipitation rate and better distribution uniformity compared to traditional pop-up nozzles. They reduce water use and irrigate the landscape more evenly. Multi-stream rotational nozzles apply water in rotating trajectories. This lowers evaporative losses because there is less misting and avoids runoff because water is applied at a slower rate and the soil has time to absorb the water.

Technology Considerations

Multi-stream rotational sprinkler heads are produced by many manufacturers, so they widely available. The nozzles can be installed on new systems or retrofitted on pop-up spray heads. They are well suited for small landscape areas and beneficial for steep slopes where erosion and water runoff are potential issues.

Proven Savings Potential

An independent long-term study comparing multi-stream rotational sprinkler heads with traditional nozzles found that multi-stream rotational sprinklers reduced overall precipitation rates from more than 2 inches of water per hour to 1 inch per hour, with a 45% relative improvement of distribution uniformity over traditional technologies. (Source: Sovocol et al. Field Study of Uniformity Improvements from Multi-stream Rotational Spray Heads and Associated Products. Southern Nevada Water Authority. Accessed March 18, 2015.)